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A man takes a step forward with prob...

A man takes a step forward with probability 0.4 and one step backward with probability 0.6 , then the probability that at the end of eleven steps he is one step away form the starting point , is

A

`.^(11)C_(5) xx (0.48)^(5)`

B

`.^(11)C_(6) xx (0.24)^(5)`

C

`.^(11)C_(5) xx (0.12)^(5)`

D

`.^(11)C_(6) xx (0.72)^(6)`

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The correct Answer is:
B
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